Abstract
Publisher Summary This chapter describes an experiment to study the relationship between stuttering and Contingent Negative Variation (CNV) in humans. The paradigm involved measuring vertex and left and right inferior frontal CNVs, generated in a 1500 msec interval between visual presentation of a single word, and a signal to speak the word. Eight stutterers and six normal speakers were studied. DC amplifiers were used and artifact-free trials averaged. Non-stutterers showed CNV at vertex and in the i.s.i. and also showed a larger negative shift at the left inferior frontal electrode than the right. Stutterers, when speaking normally, showed a CNV at vertex but no shift at either left or right inferior frontal electrode. The application of SP techniques yield data that reopen the dominance theory of stuttering for consideration and demonstrate speech-related lateral SP differences in normal speakers.
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